Printer&#39;s quoin



A. B. CARTY. PRI NTERS QUOIN.

APPLICATION FILED MAR. 6, 1919.

UNITED STATES PATENT OFFICE.

ALTON IB. CARTY, OF WASEINGTON, DISTRICT OF COLUMBI A.

PRINTER/S QUOIN.

Application filed March 6, 1919.

To aZZ whom it may concern Be it known that I, ALTON B. CARTY, a citizenof the United States, residing at \Vashington, in the District ofColumbia, have invented certain new and-useful Improvement in PrintersQuoins, of which the following is a specification.

My invention relates to improvements in printers quoins of the Hempeltype which are used in pairs, and more especially to one of the quoinelements.

My invention relates further to locking means wherein said quoinelements are positively locked against loosening when in position in thefurniture, and, further, to means whereby said quoins are held againstseparation, one from the other, in case of loosening when the lockingmeans is no employed.

My invention has for its object the use of a cotter pin of standardconstruction as a key or locking pin thus reducing the cost ofmanufacturing a specially designed pm and facilitating ready replacementby users 1n case of loss.

A further object of my invention consists in the ability to expand theadjacent portions of the cotter pin and thereby increasing its lockingproperties in use.

A further object of my invention consists in the ease with which thecotter pin may be inserted or extracted from the quoin, the head of thecotter pin being always visible in the locked quoin. I

A further object of my invention consists in the provision of a lockingpin receiving recess extending transversely of the head of the quoin andadapted to embrace the locking pin throughout its entire extremity, all

as will be hereinafter more fully described and claimed.

Figure 1 is a plan View of one form of my improved quoin.

Fig. 2 is a cross section on line 22 of Fig. 1, showing bifurcatedlocking pin inserted. V

Fig. 3 is a cross section on line 33 of Fig. 2, showing distortion ofthe bifurcated locking pin insuring positive locking of the elements.

F1 4. IS a )ers ective view of one of the 0 quoin elements showlng thepair of upi turned retaining shoulders.

Fig. 5 is a key used to impart longitudinal movement of the quoinelements in looking the quoin in the furniture.

Printers quoins of the Hempel type are Specification of Letters Patent.I

Patented Mar. 30, 1920.

Serial No. 281,042.

currence for the frequent and periodic vibratlons and ars to which suchpresses'are subjected for these cooperating elements to shift theirrelative positions and to permit a loosening of the grip on theadjoining press parts. \Vhere presses carry a body of type through anarc of movement out of the.

. horizontal plane, this in itself gives rise to the dislodgment of anylocking means which may be used to hold the elements in proper positionand which locking means may-have become, in the slightest degree, loose.

Applica-nts device serves the purpose of holding in adjusted positionthe elements of a printer's quoin regardless of vibration to which theapparatus may be subjected, and regardless of movement which would serveto dislodge an ordinary locking means.

It is the object of my invention to obviate all these objections andprovide a quoin that will be simple in construction and thoroughlyreliable inoperation.

The quoin elements are designated by the numerals 10 and 11, each beingprovided with the usual racks 12 and 13, between which the pinion of thekey 14 is introduced for expanding or contracting the quoin elements bya partial turn in one direction or the other. The inclined faces of thequoin elements are each formed with centrally disposed rib members 15and 16, the adjacent faces of which are formed with a series ofcorresponding semicircular notches or apertures in which a locking pin,to be described later. is adapted to be inserted. To keep the quoinelements evenly poised, one on the other, during use, the usual headportions 17 and 18 are formed'on one end of each quoin element. Each ofthe head portions is provided with a transverse elongated aperture 19corresponding to onev of the series of segmental notches in thecentrally disposed inclined rib through which the locking pin 20 isadapted to pass and in which the expanded end or type 23' of the pin 20is adapted to be held against rotation during locking of the quoinelements.

The locking pin 20 is preferably of the cot ,20 is then inserted ineither ol tcr pin construction, being formed of resilient metal andproviding two adjacent semi circular portions 21 and 22, joined at oneend in an expanded loop or end 23. A pair of shoulders 24 and 25 extendat right angles to the centrally disposedinclined ribs 15 and 16 at theouter extremity of each quoin element against which the head of thecorresponding element is adapted to inn p1nge.- I

- The operation of the quoin is The quoin elements are placed, other, asin the llempel quoin,

as "follows: one on the and by engagement and rotation of the pinion oilthe key 14 between the racks l2 and 13, are

contracted one on the other and wedged tightlyin-the 'lurniture. Thelocking pin the elongated apert'iilres 19 and a corresponding and registering semicircular notch in the centraltv disposed rib of the adjacentquoin element, the expanded head portion 23 ot the pin 20 closelyfitting the aperture 19, thus preventing rotation thereoti duringlongitudinal dis iilz-icemcnt oi? the quoin eleimxnts, and

each of the quoin elements embracing porresponding notched portions ofthe quoin elements returned to registering position.

It will, be evident from the relation of the aperture 19 and thecooperating rib 1(3 that the cotter pin forms a locking member in whichthc grip is continuousthroughoutthe greater part of the cotter pin andthe distortional effect has been localized between the two members 21and 22 of the cotter pin. As shown in Fig. 2 the cotter pin is incontinuous engagement with the member 11 from the extremity of themember 22 to the bight portion 20. The walls of the aperture 19 serve attheir innermost "juncture to closely grip the cotter pin. The bight byreason of the swelling portion is also gripped between the sides of theaperture 19. In this way rotational movement of the bightaround themember 22 is prevented. The outer portion of the side walls of theaperture 19, however,:permits the member 21 to be drawn out of linefromthe member In this Way the member 21 may be said to have a radial motionaround member:

as a fulcrum and the entire distortional'eii feet becomes localized inthe freemember '21.

During adjustment of the quoin in the furniture and also in case thelocking pin 20 and are formed with inclined faces which are oi?such-angles aswill permit of the passage of the adjacent quoin elementwhen pressure is applied by the action ot the pinion oi: the l llbe'tween the racks 12 and 13 in either direction, alias willv bereadily understood. 7 I 7 Having described my invention in :n-jn. what Iclaim as-new and desire to cover bv Letters Patent is:

1. A printers quoin comprising a pair oi? quoin elements, the eombi 10110? a b" cat-ed locking pin, said loc to extend transversely between theadjacent faces of said elements aiul adapted to be distorted bylongitudinal displacement ct said elements 'i 2. In combination with an'in'ters quoiu, locking means comprising a trans *erse distortable pinand means on said uoin for preventing rotation ot said pin,

3, In combination with a pair o tquoin elements formed with eoii'resionding notches in their adjacent faces, a. biturchted pin adapted toextend transversely"therethrough and be distorted by longitudinaldispladiment of said elements. 7

4-. A printers qnoin comprising-awedgeshaped membertermed withacentrally disposed rib and ahead at one end thereot. and a pair ofupturned shoulders having sloping side faces arranged one on either sideof said centrally disposed b adjacent the opposite end of said member. 7

'5. In a printcrs quoin, the combination of a pair of quoin elements,each connirising a wedge-shaped member formed with a centrallongitudinal rib, an upstanding head at one end, and a pair oi?transverse shoulders at the other end, said shoulders having slopingsidefaces. I

- In aprinters quoin, the combination of a pair of quoin elements, eachprovided with a centrally disposed rib portion and a head adjacent oneend thereof, said rib portions provided with notches in their adja centfaces and said head port-ions provided with an elongated apertureadapted to resistcr with a notch of the opposing rib. and a locking pinadapted'to be inserted in said elongated aperture and the registeringnotch.

In testimony whereof I athx my signature.

ALTON B. CARTY.

king pin adapted

